Lock



June 1, 1937.

L. E1v WILLIAMS LOCK Filed May 3, 1935 Patented June 1, 1937 UNITEDSTATES PATENT OFFICE 16 Claims.

This invention relates to locks for doors or windows, and the generalobject of the invention is to produce a lock of simple construction,which can be readily applied to a door and em- 5 lgodied in the handlesfor opening and closing the cor.

A further object of the invention is to produce a lock of this kind,which will avoid the necessity for employing knobs of ordinaryconstruction on the door. Such knobs frequently become loose, andsometimes tend to hang in a tilted position, giving an unsightlyappearance.

One of the objects of the invention is to produce a lock of this kind,which is always looked when the door is in a closed position, but inwhich the bolt can be readily released and moved to disengage it fromthe jamb by simple means, the bolt being withdrawn from the jambautomatically by the opening movement of the door. 20 A further objectof the invention is-to provide a lock of this kind, in which the boltcan be readily controlled from the inner side of the door by manuallycperated means such as a push button, but which can also be set forwithdrawal at the outer side by employing a key.

A further object of the invention is to provide a lock of this kind, inwhich portions of the lock casing project on opposite sides of the doorand constitute part of the door handle on that side of the door.

A further object of the invention is to produce an improved keymechanism for controlling a door lock, and in which the key not only hascharacteristic serrations on the edge of the key, but is provided withopenings through the key, which cooperate in controlling dogs in thebarrel of the lock, and which must be released to permit rotation by thekey.

A further object of the invention is to provide a door lock, which canbe readily applied to doors of difierent thicknesses, and which willnecessitate only very simple operations on the door to enable it toreceive the lock.

Further objects of the invention will appear hereinafter.

The invention consists in the novel parts and combination of parts to bedescribed hereinafter, all of which contribute to produce an eiiicientlock.

50 A preferred embodiment of the invention is described in the followingspecification, while the broad scope of the invention is pointed out inthe appended claims.

In the drawing:

Figure 1 is a front elevation showing a portion of a door carrying alock embodying my invention, and showing a portion of the jamb of thedoor broken away. I

Figure 2 is an elevation showing a portion of the door viewed at itsouter edge where the lock is carried, and further illustrating therelation of the lock to the door.

Figure 3 is a horizontal section through the door and lock taken on theline 3-3 of Figure 1, but upon an enlarged scale, and in this view theposition and character of the keeper is indicated in dotted lines. Thisview shows the parts in a relation to lock the door.

Figure 4 is a fragmentary section illustrating the mechanism at the leftof Figure 3, but showing the same in the unlocked position which wouldpermit the door to be opened.

Figure 5 is a cross-section taken on the line 5-5 of Figure 4.

Figure 6 is a cross-section on the line 66 of Figure 4.

Figure '7 is a cross-section on the line '|--'l of Figure 3, andparticularly illustrating a connection between the key-controlled meansand the controlling stem for the lock.

Figure 8 is a cross-section on the line 8-8 of Figure 3, particularlyillustrating details of the key-controlled mechanism of the lock.

Figure 9 is a view similar to Figure 4, but illustrating anotherembodiment of the mechanism whereby the rotation of a key may preventthe controlling stem from being shifted.

Figure 10 is a cross-section taken on the line Ill-l of Figure 9.

Figure 11 is a side elevation of a key capable of cooperating with thekey-controlled mechanism illustrated in Figs. 3 and 8, and

Figure 12 is a longitudinal section taken through the key illustrated inFigure 11.

Referring more particularly to the parts, I indicates a portion of adoor which closes against a jamb 2 having a stop 3. In order to mountthe lock in the door, I drill an opening 4 completely through the door,and from the free edge of the door I drill a chamber 6, which extendsalso in a horizontal direction and communicates with the bore 4. Thelock comprises a casing 1, which includes a tubular guide 8 received inthe bore 4, and a tubular guide 9 that is received in the bore 6. Thetubular guide 8 extends about an equal distance on each side from theface of the door, and forms the upper part of a handle on the exteriorof the door, said handle including a grip or hand-hold l0. Eachhand-hold is preferably formed with a sleeve II to telescope over theend of the tube 8, and extends downwardly so as to terminate in a foot|2 thatis secured to the face of the doorby screws l3. The tube 8 isprovided at a suitable point with a rigid collar l4 through which longscrews l5 may be applied, the threaded end of the screws I5 beingreceived in threaded openings IS on the opposite side of the door, whichcollar I4 fits over the tube 8. The collar I4 is preferably on the innerside of the door and the clamping collar i4"- on the outer side. The useof the screws 5 and the clamping collar I4 evidently enables the lock tobe readily applied to doors of different thicknesses.

The bolt of the door comprises a bolt head |1 guided to slide in theouter end of the tube 9, and carrying a shank l8, preferably of flatform, the inner portion of which is formed with a slot l9 through whichone of the bolts l5 passes so as to guide the shank l8 when the bolthead |1 slides in or out of the tube 9. In the closed position of thedoor, the tapered nose 20 of the bolt projects into a keeper 2| on thedoor jamb, said keeper being indicated in dotted lines in Fig. 3. Thiskeeper has a cam face that engages the inclined face 22 of the nose 20of the bolt, and is also provided with an outer cam face 23, whichforces the bolt head inwardly against the force of a coil spring 24 backof the bolt head. The middle portion of the shank I8 passes through aguide opening 25 in a cross wall 26 in the tube 9, and the outer end ofthe shank III has a loose connection with the bolt head H. For thispurpose I prefer to provide a pin 21 on the bolt head extendingtransversely with respect to the shank l8, and the shank is providedwith a relatively large opening 28 that receives this pin, thearrangement being such that the shank 18 can rock on the edges of theopening 25. A coil spring 29 on the bolt or pin 21, or other suitablemeans is provided for normally holding the shank I8 in its rockingposition, at which time the inner end of the shank I8 is in line with astop-head 30. In other words, the stop-head 30 is normally located inthe path of the shank so as to prevent the door from being opened.

In the operation of the lock, means on the inner and outer sides of thedoor can be operated to shift the stop-head 30 out of line with theshank I8. This enables the door to be opened merely by pulling on thehand-hold l0 that is on the inside of the door. When this hand-holdpulls the door inwardly, the cam face 22 on the nose 20 of the bolt willcam on the abutting cam face of the keeper so as to force the bolt headinwardly, compressing the spring 24.

Within the tube 8 I provide a mechanism enabling the stop-head 30 to beshifted outwardly by a person on the inner side of the door, and to beshifted inwardly by a person on the outer side of the door, and themechanism on the outer side of the door may include key-controlled meanswhereby the lock can be left in a locked condition, as illustrated inFig. 3, to prevent the stop-head from being shifted by a person on theouter side of the door, without a key.

The stop-head 30 is carried rigidly on a stem 3|, which is guided toslide longitudinally on the central axis of the tube 3. Toward the innerside of the door the stem 3| carries a push button 32, by means of whichthe stem 3| can be pushed or shifted in an outward direction. The stem3| near the stop-head 30 is formed with a shoulder 33 against whichseats a locking collar 34, and opposite this locking collar 34 arelatively fixed locking collar 35 is mounted in the tube 3-. Thesecollars 34 and 35 are so correlated in structure that if rotation 01'the relatively fixed collar with respect to the collar 34' takes place,the collar 35 may prevent movement of the collar 34 toward the left. Inother words, the locking collar 35 is capable of assuming a positionthat will prevent the collar 34 and the stem 3| from being shiftedlaterally, from the outer side of the door. For this purpose the collar35 is preferably provided with two diametrically opposite forks 36 thatmay align with similar forks 31, as indicated in Figure 3. When theseforks are in line with each other, the stem cannot be shifted inwardlyfrom the outside of the door. It should be understood that the lockingcollar 34 does not rotate, and it is fixed against rotation by anysuitable means such as a pin 38 projecting into a slot 39 in one of theforks 31. A coil spring 4|] located between the collars 34 and 35,yieldingly holds the stem 3| in its normal position, in which thestop-head 30 is directly back of the shank l8. The spring 40 seatsagainst a disc or washer 4|, and this washer has a hub 42 which hasoppositely disposed slots 43 cut in it, (see Fig. 5) to cooperate with across pin 44 carried by the stem at this point. The outer edge of thewasher 4| is formed with two diametrically opposite tongues 45 that runin corresponding grooves 46 on the inner side of the forks 36. In thisconstruction it will be evident that a rotation of the stem 3| will becommunicated to the relatively fixed locking collar 35. This rotation ofthe stem 3| can be effected from the outer side of the door through theagency of a key, as will be described hereinafter. When the key isinserted at the outer side of the door, the stem 3| can be rotated so asto rotate the locking collar 35 through a small angle, which issuihcient to bring the forks 36 out of alignment with the forks 31.After this is done the collar 35 will not prevent the stem 3| from beingshifted in an inward direction to move the stop-head 33 out of line withthe shank. The door can then be opened by pushing upon it from theoutside.

The lock is provided with means on the inner side of the door forrotating the locking collar 35 to its locking position or unlockedposition. For this purpose I provide a button or head 41, which may bethe head of a screw 48, said screw passing through a circumferentialslot 43 in the tube 3,

(see Fig. 5).

For controlling the stop-head 30 from the outer side of the door, Iprovide key-controlled means including a barrel 50, which barrel ismounted so that it is capable of shifting inwardly in the tube 8, andthe outer end 5| of the barrel projects beyond the end of the tube 8 soas to operate as a push button to be pushed inwardly from the outsidewhen the door is to be opened. If the collars 34 and 35 are not in theirlocked position, the pushing in of the button 5| will shift thestop-head 30. For this purpose the inner end of the barrel is providedwith a short stem or spindle 52, the inner end of which is provided withtwo diametrically opposite longitudinal slots 53, and these slotscooperate with a cross pin 54 in the adjacent end of the stem, and thisend of the stem is guided in a. bore 55 at the inner end of theextension 52. In other words, the connection between the barrel and thestem is constructed so as to enable an inward shifting of the barrel toshift the stem 3| by contact with the pin 54, but the connection alsoconstitutes a lost motion rotary connection. In

other words, while the rotation of the barrel can rotate the stemthrough the medium of the slot 53, by reason of the fact that theseslots have considerable length the barrel 58 can also be rotatedindependently of the stem after setting it in position to lock the stemand stop-head 30 against shifting. This lost motion rotary connection isillustrated in Figure 7.

The pin 54 in the position of rest of the lock. is located at about themiddle of slot 53 when the stop head 38 is in line with the shank l8.

Although the barrel 5!! can be pushed inwardly at any time, if thelocking collars 34 and 35 are not in their locked position, it isnecessary to apply a key in order to enable the barrel to be rotated.For this purpose the barrel 50 and the tube 8 are provided withmeans fornormally locking the barrel against rotation, but which can be releasedby applying the key 56. For this purpose the outer end of the barrel 50is provided with a key slot 51 to receive the key 56, which is flat.This key has a serrated edge 58 to cooperate with a wavy or serratededge 59 formed on the inner edge of the locking dog 68 mounted on apivot 6| in a slot 62 in the barrel. The dog is normally pressed by acoil spring 63 that engages its bent inner end so that the outer end ofthe dog is normally held in a longitudinal slot 64 on the inner side ofthe tube 8. When the key is in place, it will move the dog 68 towithdraw it from the slot 64, and permit rotation of the barrel.

Although a single locking dog may be employed in the key barrel, Iprefer to provide additional pivoted dogs 65 (see Fig. 8), which aremounted on pivot pins 66 so as to swing in and out in two slots 61,which are out of line with each other, and which are disposed in planessubstantially at right angles to the plane of the slot 62. These dogs 65have serrated inner edges, with peaks adapted to be received inaplurality of openings or perforations 68 formed in two rows through theplate of the key 56. If the wrong key is inserted in the look by aperson not authorized to pass through the doorway, the key will not openthe lock because it will not have the perforations 68 in the properpositions, and furthermore, the key might not have the proper wavy lineor serrated edge 58 to cooperate with the dog 60. By reason of theprovision of three locking dogs, a very substantial protection isafforded by this lock. Furthermore, the perforations 68 can be formed inthe key very simply by means of a die when the key is punched out.Different arrangement of the holes enable a number of different locks tobe made to be opened only by a certain key. The inner ends of the dogs55 have bent ends similar to the inner end of the dog 68 illustrated inFigure 3, and they are urged in an outward direction at their outer endsby the coil spring 53.

The outer end of the shank I8 is provided with means to cooperate withthe cam face 23 of the keeper 2|, to rock the shank into a positionindicated by the dotted lines I8 in Figure 3. It is necessary to do thisbecause otherwise the bolthead could not cam on the face 23 and beshoved inwardly. For this purpose the inner side of the bolt-head, thatis to say, the side toward the jamb of the door, is provided with aninclined cam face 68, (see Fig. 3), and this face 68 has an opening 68in it out of which projects the bent and crimped end III of the shank.In this way, a rounded head is formed at the outer end of the shank,which will engage the cam face 23 of the keeper when the door is swungtoward its closed position. It is evident that when this crimped head 10on the shank strikes the cam face 23, the outer end of the shank will bemoved laterally, and this produces a rocking movement of the shank illon the edges of the slot 25, thereby throwing the inner end of the shankout of line with the stop-head. The bolt-head can then cam on the camface 23 of the keeper, which shoves the bolt-head ll inwardly againstthe force of its spring 24. After the door becomes completely closed,the spring 24 will shove the bolt-head out into the socket of thekeeper,

and as soon as the bolt has been completely extended by the spring 24,the spring 29 will then rock the shank [8 back to its normal positionwith the inner end of the shank in line with the stop-head 38. r

In Figs. 9 and 10, I illustrate another embodiment of the invention,which is a modification of the construction illustrated in Fig. 3, andinvolving the locking collars 34 and 35. In the construction illustratedin Fig. 9, I provide a stem II corresponding to the stem 3|, and thisstem is provided with two flexible heads I2 and I3, each head consistingof two semi-circular plates I4 that are hinged together by a cross pinI5 extending through' the stem. The coil spring 16 between theseflexible heads, thrusts against their outer edges and holds the sameagainst two small diametrically disposed stops 11 that are secured onthe inner face of the barrel I8. These stops 11 are of angularcross-section so that each stop presents an inwardly projecting flangeI9, and each of these flanges is provided on its face that is toward theflexible looking head, with a radial groove that is engaged by a radialtongue M on the adjacent leaf or section I4 of the head. Adjacent theadjacent faces of the flexible heads I2 and I3, the stem 1| is providedwith cross pins 82. In the locked position for the stem II, these pinsextend as indicated in Fig. 10, that is to say, they extend at rightangles to the direction of the hinge pins 15. In this position of thepins 82, it is evident that the stem II cannot be shifted in eitherdirection. However, if the stem II is rotated through 90 the pins 82will then come into substantial parallelism with thehinge pins I5, andthen if the stem II is shoved against at either end, it is evident thatthe flexible heads can break at one of the hinge pins I5 to enable thestem to shift.

At the inner side of the door a push button 83 is provided, which. isrigidly connected to the adjacent end of the stem II by a set screw 84.If desired, the push button 83 can be provided with a head 85, forrotating the stem from the inner side of the door to place it in itslocking position. However, if this head 85 is provided, it is necessaryto provide a clearance slot 86 in the adjacent end of the tube I8, andthis slot 86 must permit longitudinal movement of the head 85, and alsomust permit circumferential movement of the head 85 in setting the stemII in its locking position.

The mode of operation of the lock will now be described. when the lockis in its locked condition, the parts are in the relation indicated inFig. 3. Before the key 56 is inserted, the outer ends of the dogs 60 andthe dogs 61 are located in their slots 64 on the inner face of thetubular guide 8. If it were attempted to push in the push-head orpush-button 5i, the stem 3| could not be shifted because the forks 31 onthe collar 84 are in line with the forks 38 on the locking collar 85. Byinserting the key II, the serrated edge on the key will cooperate withthe dog II to enable it to swing into the position in which it isindicated in Fig. 3, and at the same time, the perforations 88 throughthe blade of the key, will permit the dogs 61 to swing inwardly. Thiswill free the barrel Ill so that it can be rotated. When the barrelrotates, the extension-i2 on the inner end of the barrel. through themedium of the slots 53, will rotate the pin 54, and in this way rotatethe stem ll, thereby moving the collar l5, and forks 38 out of line withthe forks II. The key is then rotated back to a position in which thedogs BI and I are in alignment with the groove 84, and the key is thenremoved. The projecting end SI of the barrel can then be pushed inwardlyto shift the stem 3| toward the left, as viewed in Fig. 3, by reason ofthe thrust exerted against the pin M. The person who has applied thekey, then pushes against the door in a direction to open it. When thisoccurs the cam face-of the keeper 2| that is in contact with theinclined face 22 of the nose of the bolt II, will cause the bolt towithdraw from the keeper, compressing its spring 2|. After the bolt-headII has moved out of contact with the keeper, the spring 24 will move itforward to its most extended position. When this occurs. the inner endof the shank l8 will move forwardly and clear the stop-head 30, whichwill then be returned by the spring 40 to its position immediately backof the end of the shank. When the door is swung to its closed position,the crimped head 10 on the shank engages the cam face 23 or the keeper,thereby swinging the outer end of the shank is relatively toward theleft, as indicated by the dotted lines in Fig. 3. This will cause theshank to rock on the edges of the guide opening 25, and in this way theinner end of the shank will rock out of line with the stophead 30. Thisreleases the bolt-head so that it can be pushed back by the cam face 23,which immediately acts upon the inclined face I. of the bolt-head to dothis. In this way, the bolt-head is automatically retracted to permit itto pass into alignment with the keeper, and as soon as this alignmentoccurs, the bolt-head II will be forced outwardly by the spring 24, andat the same time, the spring 29 on the pin 21 acting against the sideface of the shank, will rock the shank back to its normal position.

If it is not desired to lock the door on its outer side, the collar 35is left in the position in which it was left at the time that the key 55was removed. However, whenever it is desired to set the lock so that itcan only be opened at the outside with the key, a person on the insideof the door simply rotates the collar 35 by means of the screw head 41moving in the slot 40. In this way the collar 36 can be rotated into theposition shown in Fig. 3, at which time its forks align with the forks31 of the collar N. The door can be opened at any time from the innerside, simply by pushing in on the push button 32. This operates throughthe pin 44 to compress the spring 40 against the collar 34, whichthrusts against the shoulder 33 on the stem 3|, thereby causing the stemto shift to the right, as viewed in Fig. 3, and thereby move thestop-head 80 out of line with the shank II. The door can then be openedsimply by pulling upon it as the cam face of the keeper it will cam thebolt-head outwardly in the same manner as when the door is being openedfrom the outer side. In its position of rest the spring 40 is not incompression.

In the embodiment illustrated in Figs. 9 and 10, the flexible heads 12and 13 carried on the stem Ii, cooperate with the pins 82 on the stem.When the pins 02 extend in a transverse direction to the hinge pins 1!of the flexible heads, the door is in its locked condition, but if thestem II is rotated either by a key from the outside, or by the screwhead ll on the inner side of the door, until the pins I! have their axessubstantially parallel with the hinge pins II, the flexible heads canthen "break when the stem is pushed either from the outside or from theinside. This break ing of the flexible heads permits the shiftingmovement of the stem, which is sumcient to bring the stop-head out ofline with the rear end of the shank.

It is understood that the embodiment of the invention described hereinis only one of the many embodiments this invention may take, and

I do not wish to be limited in the practice of the I invention, nor inthe claims, to the particular embodiment set forth.

What I claim is:

1. In a door lock, the combination of a casing mounted on the door, abolt guided to slide in the plane of the door and within the casing tocooperate with a keeper attached to the door lamb, a spring back of thebolt to urge the bolt into the keeper when the door is closed, said bolthaving a construction enabling the keeper in the opening movement of thedoor. to withdraw the bolt from the keeper, a stop associated with thebolt, normally located in line with the bolt to prevent its withdrawal,and mounted to slide transversely through the plane of the door, movablemeans at the exterior of the door for moving the stop to permitwithdrawal of the bolt, and means controlled by a key on the exterior ofthe door for locking the movable stop in a position to prevent thewithdrawal of the bolt.

2. In a door lock, the combination of a casing mounted on the door, abolt guided to slide in the plane of the door and within the casing tocooperate with a keeper attached to the door lamb, a spring back ofthe'bolt for urging the bolt outwardly toward the keeper when the dooris closed. said bolt having a construction enabling the opening movementof the door to withdraw the bolt from the keeper, a stop member in linewith the bolt and located back of it, for preventing withdrawal of thebolt, means for moving the stop member out of line with the bolt, andkeycontrolled means on the outer side of the door for afiecting the stopmember to prevent its movement out or line with the bolt by said lastnamed means. V

3. In a door lock to cooperate with a keeper on the door lamb and a camfor withdrawing the bolt, the combination of a casing mounted on thedoor, a bolt guided in the casing, a-spring urging the bolt into thekeeper, said bolt having a shank extending rearwardly therefrom, a stemguided to slide in the casing transversely to the plane of the door andhaving a stop normally in line with the shank for preventing withdrawalof the bolt from the keeper, key-controlled means outside of the door,with means released by the key and capable of being moved thereafter-tomove the stem and shift the stop out of line with the shank, andresilient means associated with the stem for yieldingly holding the stopnormally in line with the shank.

4. In a door lock to cooperate with a keeper and a cam on the door jamb,the combination of a casing mounted on the door, a bolt guided in thecasing, a spring urging the bolt into the keeper, said bolt having ashank extending rearwardlytherefrom, a stem guided to slide in thecasing transversely to the plane of the door and having a stop normallyin line with the shank for preventing withdrawal of the bolt from thekeeper, movable means outside the door for shifting the stem to move itout of line with the shank, key-controlled means outside the doorcapable of being shifted, toshift the stem, and capable of rotating thestem, and relatively fixed means cooperating with the stem-afterrotation by the key for. preventing shifting of the stem by thekey-controlled means.

5. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the lock when the door is opened, thecombination of a bolt having a shank, means for guiding the bolt, tomove toward or from the keeper, a spring for pressing the bolt towardthe keeper, a stop guided to move in the door including a stem and astop-head, means for yieldingly'holding the stop so that the stop-headlies in the path of the shank to prevent the bolt from withdrawing fromthe keeper, said stem having means located at the exterior of the doorto be moved by hand to shift the stop head out of the plane of the shankto enable the door to be opened, and to enable the keeper to withdrawthe bolt, said spring operating to extend the bolt and the shank afterthe door is opened and thereby enabling said stop head to reassume itsposition back of the shank, and automatic means operated by the keeperwhen the door is moved to its closed position to deflect the shank andthereby enable the keeper to withdraw the bolt as it is moving intoalignment with the keeper.

6. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the look when the door is opened,-thecombination of a casing, a bolt, means for guiding the same in thecasing to move toward or from the keeper, a spring for pressing the bolttowardthe keeper and maintaining the bolt extended when the door isopen, said bolt including a shank, a stop including a stem and astop-head guided to move in the door, means for yieldingly holding thestem in a position to hold the stop-head in the path of the shank toprevent the bolt from being withdrawn, means actuated by the keeper whenthe door is moved'to its closed position, to deflect the shank of thebolt to move the same out of line with the stop-head and thereby enablethe keeper to withdraw the bolt to permit it to pass into line with thekeeper, said stem having means to be moved by hand when the door is inits closed position to shift the stem and move the stop-head out ofthepath of the shank to enable the door to be pulled open while the keeperoperates to withdraw the bolt by cam action on the end of the bolt.

7. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the look when the door is opened, thecombination of a casing, a bolt, means for guiding the same in thecasing to move toward or from the keeper, a spring for pressing the bolttoward the keeper and maintaining the bolt extended when the door isopen, said bolt including a shank, a stop including a stem and astop-head guided to move in the door, means for yieldingly holding thestem in a position to hold the stop-head in the path of the shank toprevent the bolt from being withdrawn, means actuated by the keeper whenthe door is moved to its closed position to deflect the shank of thebolt to move the same out of line with the stop-head and thereby enablethe keeper to withdraw the bolt to permit it to pass into line with thekeeper, said stem having means outside the door to be moved by hand whenthe door is in its closed position to shift the stem and move thestop-head out of the pathof the shank to enable the door to be pulledopen while the. keeper operates to withdraw the bolt by cam action onthe end of the bolt, key-controlled means outside the door mounted toslide and rotate, to be shifted by hand in the unlocked condition of thelock, to

.shift the stem and thereby move the stop-head to enable the bolt to bewithdrawn, said keycontrolled means having a connection with the stemenabling the stem to be rotated by the key-controlled means, relativelyfixed means mounted in the casing, and means on the stem to cooperatewith the relatively fixed means when the stem is rotated through theagency of the key, to lock the stem against being shifted by thekey-controlled means.

8. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the look when the door is opened, thecombination of a casing, a bolt, means for guiding the same in thecasing to move toward or from the keeper, a spring for pressing the bolttoward the keeper and maintaining thebolt extended when the door isopen, said bolt including a shank, a stop including a stem and astop-head guided to move in the door, means for yieldingly holding thestem in a position to hold the stop-head in the path of the shank toprevent the bolt from being withdrawn, means actuated by the keeper whenthe door is moved tov its closed position to defiect the shank of thebolt to move the same out of line with the stop-head and thereby enablethe keeper to withdraw .the bolt to permit 1 it to pass into line withthe keeper, said stem having means at the exterior, of the door. to bemoved by hand when the door is in its closed position, to shift the stemand move the stophead out of the path of the shank to enable the door tobe pulled open while the keeper operates to withdraw the bolt by camaction on the end of the bolt, key-controlled means at the exterior ofthe door mounted to slide and rotate, to be shifted by hand in theunlocked condition of the lock, to shift the stem and thereby move thestop-head to enable the bolt to be withdrawn, said key-controlled meanshaving a connection with the stem'enabling the stem to be rotated by thekey-controlled means, a relativelyv fixed locking-collar mounted in thecasing, a relatively movable locking-collar carried by the stem to movetoward or from the relatively fixed locking-collar, said locking-collarshaving correlated parts capable of engaging to prevent the stem frombeing shifted inwardly from the exterior of the door by thekey-controlled means, said relatively fixed locking-collar having aconnection with the stem enabling the stem to rotate the same on theaxis of the stem to align the said correlated parts of the twolockingcollars when the stem is rotated by the key-controlled means.

9. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the look when the door is opened, thecombination of a casing, a bolt, means for guiding the same in thecasing to move toward orfrom the keeper, 9. spring for pressing the bolttoward the keeper and maintaining the bolt extended when the door isopen,'said bolt including a shank, a stop including a stem and astop-head guided to move in the door, means for yieldingly holding thestem in a position to hold the stop-head in the path of the shank toprevent the bolt from being withdrawn, means actuated by the keeper whenthe'door is moved to its closed position to deflect the shank of thebolt to move the same out of line with the stop-head and thereby enablethe keeper to withdraw the bolt to permit it to pass into line with thekeeper, said stern having means at the exterior of the door to be movedby hand when the door is in its closed position to shift the stem andmove the stophead out of the path of the shank to enable the door to bepulled open while the keeper operates to withdraw the bolt by cam actionon the end of the bolt, key-controlled means at the exterior of the doormounted to slide and rotate, to be shifted by hand in the unlockedcondition of the lock, to shift the stem and thereby move the stop-headto enable the bolt to be withdrawn, said key-controlled means having aconnection with the stem enabling the stem to be rotated by thekey-controlled means, a relatively fixed locking-collar mounted in thecasing, a relatively movable locking-collar carried by the stem to movetoward or from the relatively fixed lockingcollar, said locking-collarshaving correlated parts capable of engaging to prevent the stem frombeing shifted inwardly from the exterior of the door by thekey-controlled means, said relatively fixed locking-collar having aconnection with the stem enabling the stem to rotate the same on theaxis of the stem to align the said correlated parts of the twolocking-collars when the stem is rotated by the key-controlled means,the said connection between the stem and the key-controlled meansincluding a lost motion rotary connection enabling the key-controlledmeans to rotate the stem to move the relatively movable locking-collarinto its looking position and enabling the key-controlled means to berotated thereafter independently of the stem to return thekey-controlled means to its normal key-receiving position. I

10. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the look when the door is opened, thecombination of a casing including a tubular guide mounted in the doorand extending transversely to the plane of the door, a bolt guided inthe door and having a head to cooperate with the cam of the keeper towithdraw the bolt when the door is pulled open from its closed position,said bolt having a shank extending toward the tubular guide, a stemguided to slide in the tubular guide and having a stop-head in the pathof the shank to normally prevent the bolt from being withdrawn by thecam of the keeper, a spring for urging the bolt toward the keeper, alockingcollar carried by the stem so as to shift when the stem isshifted, a relatively fixed lockingcollar mounted in the tubularextension and having a connection with the stem enabling the relativelyfixed locking-collar to be rotated on the axis of the stem, saidlocking-collars having correlated parts capable of aligning and engagingeach other to prevent the stem from being moved toward the inner side ofthe door, keycontrolled means mounted at the outer end of the tubularguide and having a connection with the stem enabling the stem to beshifted by the key-controlled means and enabling the keycontrolled meansto rotate the stem to move the relatively fixed locking-collar into itslocking position to lock the relatively movable lockingcollars, andthereby prevent the key-controlled means from shifting the stem.

11. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the lock when the door is opened, thecombination of a casing including a tubular guide mounted in the doorand extending transversely to the plane of the door, a bolt guided inthe door and having a head to cooperate with the cam of the keeper towithdraw the bolt when the door is pulled open from its closed position,said bolt having a shank extending toward the tubular guide, a stemguided to slide in the tubular guide and having a stop-head in the pathof the shank to normally prevent the bolt from being withdrawn by thecam of the keeper, a spring for urging the bolt toward the keeper, alockingcollar carried by the stem so as to shift when the stem isshifted, a relatively fixed lockingcollar mounted in the tubularextension and having a connection with the stem enabling the relativelyfixed locking-collar to be rotated on the axis of the stem, saidlocking-collars having correlated parts capable of aligning and engagingeach other to prevent the stem from being moved toward the inner side ofthe door, keycontrolled means mounted at the outer end of the tubularguide and having a connection with the stem enabling the stem to beshifted by the key-controlled means and enabling the key-controlledmeans to rotate the stem to move the relatively fixed locking-collarinto its locking position to lock the relatively movable lockingcollars,and thereby prevent the key-controlled means from shifting the stem, andmeans on the exterior of the tubular extension on the inner side of thedoor for rotating the relatively fixed locking-collar into its lockingposition or into its unlocking position.

12. In a door lock to cooperate with a keeper of the door, a bolt guidedin the door and having I a head to cooperate with the cam of the keeperto withdraw the bolt when the door is pulled open from its closedposition, said bolt having a shank extending toward the tubular guide, astem guided to slide in the tubular guide and having a stop-head in thepath of the shank to normally prevent the bolt from being withdrawn bythe cam of the keeper, a spring for urging the bolt toward the keeper, alocking-collar carried by the stem so as to shift when the stem isshifted, a relatively fixed locking-collar mounted in the tubularextension and having a connection with the stem enabling the relativelyfixed lockingcollar to be rotated on the axis of the stem, 9. springbetween the locking-collars normally holding the stem 'with thestop-head back of the shank and in its path to prevent inward movementof the same, said locking-collars having correlated parts capable ofaligning and engaging each other to prevent the stem from being movedtoward the inner side of the door, keycontrolled means mounted at theouter end of the tubular guide and having a connection with the stemenabling the stem to be shifted by the key-controlled means and enablingthe key-controlled means to rotate the stem to move the relatively fixedlocking-collar into its locking po- I sition to lock the relativelymovable lockingcollars and thereby prevent the key-controlled means fromshifting the stem.

13. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the look when the door is opened, thecombination of a bolt having a shank, means for guidingthe bolt to movetoward or from the keeper, a spring for pressing the bolt toward thekeeper, a stop guided to slide transversely through the door in eitherdirection including a stem and a stop-head, means for yieldingly holdingthe stop so that the stop-head lies in the path of the shank to preventthe bolt from withdrawing from the keeper, said stem having meansoutside the door to be pushed in by hand to shift the stem and move thestop-head out of line and to one side of the plane of the shank toenable the door to be opened, and to enable the keeper to withdraw thebolt, said spring operating to extend the bolt and the shank after thedoor is opened and thereby enabling said stop-head to reassume itsposition back of the shank, means for supporting the shank to permit thesame to rock laterally to move the end of the shank out of line with thestop-head, said shank having an extension for engaging the keeper torock the shank laterally out of its normal plane when the door is movingto its closed position, and thereby move the shank out of the plane ofthe stophead to enable the keeper to withdraw the bolt as it is movinginto alignment with the keeper.

14. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the lock when the door is opened, thecombination of a bolt having a shank, means for guiding the 40 bolt tomove toward or from the keeper, a spring for pressing the bolt towardthe keeper, a stop guided to move in the door including a stophead,means for yieldingly holding the stop-head in the path of the shank toprevent the bolt from withdrawing from the keeper, means at the side ofthe door for shifting the stem to move the stop-head out of alignmentwith the shank, means for rotating the stern, and mechanism controlledby the rotation of the stem, to lock 50 the stem against movement toprevent the stophead from being shifted out of line with the shank.

15. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the look when the door is opened, thecombination of a bolt having a shank, means for guiding the bolt to movetoward or from the keeper, a spring for pressing the bolt toward thekeeper, a stop guided to move in the door including a stem and astop-head, means for yieldingly holding the stop-head in the path of theshank to prevent the bolt from withdrawing from the keeper, means at theside of the door for shifting the stem to move the stop-head out of linewith the shank, and key-controlled means mounted at the side of the doorcapable of being moved inwardly to shift the stem and having aconnection with the stem enabling the rotation of the key-controlledmeans to rotate the stem, and

means whereby the rotation of the stem by the key locks the stem againstshifting by the keycontrolled means.

16. In a door lock to cooperate with a keeper having a cam forwithdrawing the bolt of the lock when the door is opened, thecombination of a bolt having a shank, means for guiding the bolt to movetoward or from the keeper, a spring for pressing the bolt toward thekeeper, a stop guided to move in the door including a stem and astop-head, a tubular guide for the stop-head, a pair of flexible heads,each head consisting of a pair of sections, hinge pins securing theplate sections to the stem, a coil spring within the tubular guidebetween the said flexible heads, stops on the inner side of the wall ofthe tubular guide and against which the ends of the spring thrust thesaid flexible heads, said stops located so that they engage the edges ofthe hinged sections remote from the said hinge pins so as to permit thestem to be shifted longitudinally in either direction from its positionof rest so as to bring the stop-heed out of line with the shank of thebolt to permit the bolt to be withdrawn for opening the door, means atthe end of the tubular guide for shifting the stem, and means at theside of the door for rotating the stem on its axis so as to bring theaxes of the hinge pins substantially in line with the stops and therebyenable the stops to prevent longitudinal shifting of the stem.

LEWIS E. WILLIAMS.

